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refactor GC scanning code to reflect jl_binding_t are now first class #51035

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Aug 26, 2023
Merged

refactor GC scanning code to reflect jl_binding_t are now first class #51035

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refactor GC scanning code to reflect jl_binding_t are now first class
d-netto Aug 24, 2023
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15 changes: 2 additions & 13 deletions src/gc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2318,19 +2318,10 @@ STATIC_INLINE void gc_mark_excstack(jl_ptls_t ptls, jl_excstack_t *excstack, siz
}

// Mark module binding
STATIC_INLINE void gc_mark_module_binding(jl_ptls_t ptls, jl_module_t *mb_parent, jl_binding_t **mb_begin,
jl_binding_t **mb_end, uintptr_t nptr,
STATIC_INLINE void gc_mark_module_binding(jl_ptls_t ptls, jl_module_t *mb_parent, uintptr_t nptr,
uint8_t bits) JL_NOTSAFEPOINT
{
jl_gc_markqueue_t *mq = &ptls->mark_queue;
for (; mb_begin < mb_end; mb_begin++) {
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jl_binding_t *b = *mb_begin;
if (b == (jl_binding_t *)jl_nothing)
continue;
verify_parent1("module", mb_parent, mb_begin, "binding_buff");
gc_assert_parent_validity((jl_value_t *)mb_parent, (jl_value_t *)b);
gc_try_claim_and_push(mq, b, &nptr);
}
jl_value_t *bindings = (jl_value_t *)jl_atomic_load_relaxed(&mb_parent->bindings);
gc_assert_parent_validity((jl_value_t *)mb_parent, bindings);
gc_try_claim_and_push(mq, bindings, &nptr);
Expand Down Expand Up @@ -2465,9 +2456,7 @@ FORCE_INLINE void gc_mark_outrefs(jl_ptls_t ptls, jl_gc_markqueue_t *mq, void *_
jl_binding_t **table = (jl_binding_t**)jl_svec_data(bindings);
size_t bsize = jl_svec_len(bindings);
uintptr_t nptr = ((bsize + mb_parent->usings.len + 1) << 2) | (bits & GC_OLD);
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jl_binding_t **mb_begin = table + 1;
jl_binding_t **mb_end = table + bsize;
gc_mark_module_binding(ptls, mb_parent, mb_begin, mb_end, nptr, bits);
gc_mark_module_binding(ptls, mb_parent, nptr, bits);
}
else if (vtag == jl_task_tag << 4) {
if (update_meta)
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2 changes: 1 addition & 1 deletion src/gc.h
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Expand Up @@ -146,7 +146,7 @@ typedef struct _mallocarray_t {

// pool page metadata
typedef struct _jl_gc_pagemeta_t {
// next metadata structre in per-thread list
// next metadata structure in per-thread list
// or in one of the `jl_gc_global_page_pool_t`
struct _jl_gc_pagemeta_t *next;
// index of pool that owns this page
Expand Down